Originally published on Thu December 18, 2014 4:52 pm
Scientists have discovered enigmatic markings on an ancient shell that's been sitting in a museum for more than a century — and they believe this may be the oldest known example of a deliberate geometric engraving made by a human hand.
Originally published on Fri December 5, 2014 9:51 am
As we're sipping away on a glass of stout or Merlot, we probably take for granted our ability to digest the alcohol in the drink. Alcohol, or dietary ethanol (as scientists like to call it), is technically a toxin — imbibing too much can lead to a hangover and even poisoning, of course.
Originally published on Thu December 4, 2014 10:12 am
An article in the December issue of National Geographic looks at toxic waste sites in the U.S. and the more than 49 million Americans who live near them. NPR's Eric Westervelt talks with writer Paul Voosen about his piece.
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Originally published on Sat November 29, 2014 5:29 pm
There are more twins in the "millennial generation" than any other generation, thanks partly to a twin boom in the '90s. The main reason was a new technology called in vitro fertilization, which in its early days frequently produced twins, triplets and other multiple births.